ABAP Select data from SAP table /BOBF/ACT_LIST into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /BOBF/ACT_LIST table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to /BOBF/ACT_LIST. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the /BOBF/ACT_LIST table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_/BOBF/ACT_LIST TYPE STANDARD TABLE OF /BOBF/ACT_LIST,
      WA_/BOBF/ACT_LIST TYPE /BOBF/ACT_LIST,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: </BOBF/ACT_LIST> TYPE /BOBF/ACT_LIST.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/BOBF/ACT_LIST.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /BOBF/ACT_LIST
  INTO TABLE IT_/BOBF/ACT_LIST.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /BOBF/ACT_LIST
*  INTO TABLE @DATA(IT_/BOBF/ACT_LIST2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_/BOBF/ACT_LIST INDEX 1 INTO DATA(WA_/BOBF/ACT_LIST2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/BOBF/ACT_LIST ASSIGNING </BOBF/ACT_LIST>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</BOBF/ACT_LIST>-NAME = 1.
</BOBF/ACT_LIST>-EXTENSION = 1.
</BOBF/ACT_LIST>-VERSION = 1.
</BOBF/ACT_LIST>-ACT_KEY = 1.
</BOBF/ACT_LIST>-BO_KEY = 1.

ENDLOOP.

LOOP AT IT_/BOBF/ACT_LIST INTO WA_/BOBF/ACT_LIST.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/BOBF/ACT_LIST-ACT_CAT, sy-vline,
  WA_/BOBF/ACT_LIST-ACT_NAME, sy-vline,
  WA_/BOBF/ACT_LIST-ACT_ESR_NAME, sy-vline,
  WA_/BOBF/ACT_LIST-ACT_GENIL_NAME, sy-vline,
  WA_/BOBF/ACT_LIST-ACT_CARDINALITY, sy-vline,
  WA_/BOBF/ACT_LIST-NODE_KEY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/BOBF/ACT_LIST you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_/BOBF/ACT_LIST TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_/BOBF/ACT_LIST INTO WA_/BOBF/ACT_LIST.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit TSTLC, internal->external for field CREATE_TIME
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_/BOBF/ACT_LIST-CREATE_TIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/BOBF/ACT_LIST-CREATE_TIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTLC, internal->external for field CHANGE_TIME
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_/BOBF/ACT_LIST-CHANGE_TIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/BOBF/ACT_LIST-CHANGE_TIME.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_/BOBF/ACT_LIST_STR, 
NAME TYPE STRING,
EXTENSION TYPE STRING,
VERSION TYPE STRING,
ACT_KEY TYPE STRING,
BO_KEY TYPE STRING,
ACT_CAT TYPE STRING,
ACT_NAME TYPE STRING,
ACT_ESR_NAME TYPE STRING,
ACT_GENIL_NAME TYPE STRING,
ACT_CARDINALITY TYPE STRING,
NODE_KEY TYPE STRING,
ACT_CLASS TYPE STRING,
PARAM_DATA_TYPE TYPE STRING,
PARAM_CDS_ABSTRACT_ENTITY TYPE STRING,
ESR_PARAM_DATA_T TYPE STRING,
EDIT_MODE TYPE STRING,
EXEC_ONLY_ALL TYPE STRING,
MSGID_SUCCESS TYPE STRING,
MSGNO_SUCCESS TYPE STRING,
MSGID_ERROR TYPE STRING,
MSGNO_ERROR TYPE STRING,
MSGID_CHECK TYPE STRING,
MSGNO_CHECK TYPE STRING,
ALIAS_ACTION TYPE STRING,
SP_MAPPER_CLASS TYPE STRING,
USE_PROXY_TYPE TYPE STRING,
PREPARE_IMPL TYPE STRING,
TD_CONTAINER TYPE STRING,
TD_CONTAINER_VAR TYPE STRING,
CHK_ACT_ALSO_INT TYPE STRING,
BASE_ACTION_KEY TYPE STRING,
EXTENDIBLE TYPE STRING,
EXPORT_PARAM TYPE STRING,
EXPORT_PARAM_S TYPE STRING,
EXPORT_PARAM_TT TYPE STRING,
EXPORT_PARAM_CDS_ABSTR_ENTITY TYPE STRING,
EXPORT_PARAM_BO TYPE STRING,
EXPORT_PARAM_ND TYPE STRING,
EXPORT_CARDINALITY TYPE STRING,
EXPORT_PARAM_LINK_TO_INSTANCE TYPE STRING,
ACT_ANNOTATION TYPE STRING,
OBJECT_MODEL_GENERATED TYPE STRING,
LAST_RELEVANT_DDIC_CHANGE TYPE STRING,
BDEF_EXTERNAL_NAME TYPE STRING,
BDEF_LOCK_MODE TYPE STRING,
CREATE_USER TYPE STRING,
CREATE_TIME TYPE STRING,
CHANGE_USER TYPE STRING,
CHANGE_TIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/BOBF/ACT_LIST_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_/BOBF/ACT_LIST_STR-NAME sy-vline 
WA_/BOBF/ACT_LIST_STR-EXTENSION sy-vline 
WA_/BOBF/ACT_LIST_STR-VERSION sy-vline 
WA_/BOBF/ACT_LIST_STR-ACT_KEY sy-vline 
WA_/BOBF/ACT_LIST_STR-BO_KEY sy-vline 
WA_/BOBF/ACT_LIST_STR-ACT_CAT sy-vline 
WA_/BOBF/ACT_LIST_STR-ACT_NAME sy-vline 
WA_/BOBF/ACT_LIST_STR-ACT_ESR_NAME sy-vline 
WA_/BOBF/ACT_LIST_STR-ACT_GENIL_NAME sy-vline 
WA_/BOBF/ACT_LIST_STR-ACT_CARDINALITY sy-vline 
WA_/BOBF/ACT_LIST_STR-NODE_KEY sy-vline 
WA_/BOBF/ACT_LIST_STR-ACT_CLASS sy-vline 
WA_/BOBF/ACT_LIST_STR-PARAM_DATA_TYPE sy-vline 
WA_/BOBF/ACT_LIST_STR-PARAM_CDS_ABSTRACT_ENTITY sy-vline 
WA_/BOBF/ACT_LIST_STR-ESR_PARAM_DATA_T sy-vline 
WA_/BOBF/ACT_LIST_STR-EDIT_MODE sy-vline 
WA_/BOBF/ACT_LIST_STR-EXEC_ONLY_ALL sy-vline 
WA_/BOBF/ACT_LIST_STR-MSGID_SUCCESS sy-vline 
WA_/BOBF/ACT_LIST_STR-MSGNO_SUCCESS sy-vline 
WA_/BOBF/ACT_LIST_STR-MSGID_ERROR sy-vline 
WA_/BOBF/ACT_LIST_STR-MSGNO_ERROR sy-vline 
WA_/BOBF/ACT_LIST_STR-MSGID_CHECK sy-vline 
WA_/BOBF/ACT_LIST_STR-MSGNO_CHECK sy-vline 
WA_/BOBF/ACT_LIST_STR-ALIAS_ACTION sy-vline 
WA_/BOBF/ACT_LIST_STR-SP_MAPPER_CLASS sy-vline 
WA_/BOBF/ACT_LIST_STR-USE_PROXY_TYPE sy-vline 
WA_/BOBF/ACT_LIST_STR-PREPARE_IMPL sy-vline 
WA_/BOBF/ACT_LIST_STR-TD_CONTAINER sy-vline 
WA_/BOBF/ACT_LIST_STR-TD_CONTAINER_VAR sy-vline 
WA_/BOBF/ACT_LIST_STR-CHK_ACT_ALSO_INT sy-vline 
WA_/BOBF/ACT_LIST_STR-BASE_ACTION_KEY sy-vline 
WA_/BOBF/ACT_LIST_STR-EXTENDIBLE sy-vline 
WA_/BOBF/ACT_LIST_STR-EXPORT_PARAM sy-vline 
WA_/BOBF/ACT_LIST_STR-EXPORT_PARAM_S sy-vline 
WA_/BOBF/ACT_LIST_STR-EXPORT_PARAM_TT sy-vline 
WA_/BOBF/ACT_LIST_STR-EXPORT_PARAM_CDS_ABSTR_ENTITY sy-vline 
WA_/BOBF/ACT_LIST_STR-EXPORT_PARAM_BO sy-vline 
WA_/BOBF/ACT_LIST_STR-EXPORT_PARAM_ND sy-vline 
WA_/BOBF/ACT_LIST_STR-EXPORT_CARDINALITY sy-vline 
WA_/BOBF/ACT_LIST_STR-EXPORT_PARAM_LINK_TO_INSTANCE sy-vline 
WA_/BOBF/ACT_LIST_STR-ACT_ANNOTATION sy-vline 
WA_/BOBF/ACT_LIST_STR-OBJECT_MODEL_GENERATED sy-vline 
WA_/BOBF/ACT_LIST_STR-LAST_RELEVANT_DDIC_CHANGE sy-vline 
WA_/BOBF/ACT_LIST_STR-BDEF_EXTERNAL_NAME sy-vline 
WA_/BOBF/ACT_LIST_STR-BDEF_LOCK_MODE sy-vline 
WA_/BOBF/ACT_LIST_STR-CREATE_USER sy-vline 
WA_/BOBF/ACT_LIST_STR-CREATE_TIME sy-vline 
WA_/BOBF/ACT_LIST_STR-CHANGE_USER sy-vline 
WA_/BOBF/ACT_LIST_STR-CHANGE_TIME sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.